A dielectric study of poly(ethylene‐co‐vinyl acetate)‐poly(vinyl chloride) blends. III. Direct current conductivity and electrode polarization

Abstract

Abstract The large direct current (d.c.) conductance observed at low frequencies and high temperatures in conjunction with a simple electrical circuit model was used to calculate specific conductivities in PVC and mixtures of PVC with a poly(ethylene‐vinyl acetate) copolymer. Activation energies for d.c. conduction and dipole relaxation in PVC and the blends were found to be in reasonable correspondence. The effects of different electrode materials on the d.c. conductance as well as on electrode polarization are discussed.